1 Answer

This is Garmin's response to me after having the same problem on a 2 year old Nuvi 650:We are no longer replacing or repairing this model unit. However, let me give you some steps to try to calibrate the screen of your unit. The following 'Fix' did not work. I won't be buying another Garmin.To recalibrate the touchscreen on your nuvi 600 series device please follow the steps below:

Plug the device into the computer via USB data cable

Double click My Computer (Mac Users can skip this step)

Double Click the Garmin or nuvi drive

Double click the Garmin folder

Delete the GUPDATE.GCD file (if this file is not on the device please skip to the next step)

Unplug the GPS device from the computer

Power the device off

Press and hold the Power button

After a short period a screen should appear that says Touch Dot

Release the Power button

Touch the dots as they move around the screen.

Your touchscreen should now be recalibrated.

If the screen is still not responding, then the unit will need to be replaced with a new unit at this time.

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2.A new screen will display that says Press
Dot,Touch the Center of the Dot.

>Keep touching the center of the dot as it
moves around the screen.

3.When Calibration Complete appears on the
screen, please touch OK.

The screen will now be Re-calibrated.

*If the screen is not responding to touch, the
device may not have enough power to function properly. Recharge the battery
completely and try again. If the battery does not charge, it may need to be
replaced.

If the screen is still not responding to touch
commands or displaying properly, the display may need to be replaced. If sound
comes from the device, it is likely the motherboard is working, and only the
display needs to be replaced.

Doing a soft reset on the nuvi will usually get the nuvi up and running.If there is a reset button on the
bottom, press and hold it until the nuvi powers back on. If it does not
have the reset button on the bottom, slide and hold the power switch to
the left for at least 10 seconds.Also running the Garmin WebUpdater and reloading the latest update will resolve most issues.Download and Install WebUpdater.

If the Touch Sceen is not responding properly, calibrate the touch screen.. Turn the Nuvi off then back on Slide Power key to the right (lock) Hold your finger on the secrren for 30 seconds until the calibration screen appears Follow the on-screen instructions

There are three levels of fixes, please try them in order:
1. Reset the GPS using the Reset button, on the back, just under the Antenna Hinge. Resetting will turn off the GPS, and then turn it back on, if connected to power. Test, if fixed, great, otherwise, go to fix 2.
2. Turn the power off, then press and hold the powerbutton for up to 2 minutes. The GPS will turn on, and display a "PreBoot Mode" message. When that message disappears, and the screen calibration screen appears, follow the on-screen instructions, and you are fixed. If you still cannot use the touch screen, repeat fixes 1 and 2 several times, just to be sure., then go to fix 3
3. The touch-screen glass has probably broken or lost its connection with the GPX motherboard. You can order new touch screen glass on the web and install yourself, if you are techy in nature, otherwise do a search for "garmin nuvi 660 repair" and choose your service.

Have you tried performing a soft reset by pressing the reset button on the back of the unit, then turning it on again?

How about a hard reset?

With the unit powered off, hold your finger on the upper right- hand corner of the touch screen and tap the power key. Continue to hold your finger on the screen until you get a warning message. Tap "OK" to reboot the GPS.

Try to calibrate the touch screen. Push and hold the power button on until you see a white dot on the screen. This is the calibration mode. Touch the dot and another dot will apppear, now touch this dot again, keep doing this until the unit reboot.

If you touch the 1st dot and nothing happens then the digitizer on the LCD is dead. If the unit is still under warranty, get a RMA and return it to Garmin.